<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 上方搜索框与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row> 
      <!-- 表格区域 -->
      <el-table
        :data="goodsList"
        stripe
        border
        style="width: 100%"
      >
        <el-table-column
          header-align="center"
          type="index"
          label="#"
        ></el-table-column>
        <el-table-column
          header-align="center"
          prop="goods_name"
          label="商品列表"
        >
        </el-table-column>
        <el-table-column
          header-align="center"
          prop="goods_price"
          label="商品价格(元)"
          width="105"
        >
        </el-table-column>
        <el-table-column
          header-align="center"
          prop="goods_weight"
          label="商品重量"
          width="80"
        >
        </el-table-column>
        <el-table-column
          header-align="center"
          prop="add_time"
          label="添加时间"
          width="170"
        >
          <template v-slot="scope">
            {{ scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column
          label="操作"
          width="130"
          header-align="center"
        >
          <template v-slot="scope">
            <el-button
              style="margin-bottom:0"
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="goEditPage(scope.row.goods_id)"
            ></el-button>
            <el-button
              style="margin-bottom:0"
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeGoods(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 查询参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 商品总数
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('商品信息获取失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
      // console.log(this.total);
    },
    // 分页区域大小改变时触发
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当前页码改变时触发
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 删除商品
    async removeGoods(id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err =>err )
          if(confirmResult!=='confirm') return this.$message.info('已取消删除')
          const {data:res} = await this.$http.delete('goods/' + id) 
          if(res.meta.status!==200) return this.$message.error('删除失败')
          this.getGoodsList()
          this.$message.success('删除成功')
    },
    // 点击添加商品时触发
    goAddPage(){
      this.$router.push('goods/add')
    },
    goEditPage(id){
      sessionStorage.setItem('id',id)
      this.$router.push('goods/edit')
    }
  }
}
</script>

<style lang="less" scoped>
</style>